Top suppliers
Top suppliers to Sellafield
Top-five suppliers hold 95% of contract value — a concentrated market.
Procurement categories
What Sellafield buys
Common Procurement Vocabulary (CPV) breakdown of contracts awarded over the reporting period.
713100001462000045230000791100003021000033110000923100004525000071350000384300003414000079310000Recent contracts
Latest Sellafield contracts awarded
The most recently published award notices on Find a Tender and Contracts Finder.
DNWP0023/LOT4/Waste OU - RCT Redundant Facilities Baseline
AtkinsAltrad · 2026-06-24
£221K
DNWP0021/LOT1B/ RROBO Future deployment
AtkinsAltrad · 2026-05-18
£909K
eDAR01165 - Purchase of Seracam
Serac Imaging Systems · 2026-04-13
£170K
DNWP0050/LOT1B/Permanent electrical and water supplies to Compound 4
AtkinsAltrad · 2026-04-08
£751K
DNWP0056/LOT1A/ Quaternary Borehole Restoration
AMENTUM CLEAN ENERGY LIMITED · 2026-03-26
£81K
DNWP0004/LOT1B/ Alpha Active Demonstrator
AtkinsAltrad · 2026-03-10
£1.4M
eDAR00458 - Enhanced Communications AD
AtkinsAltrad · 2026-03-02
£31K
eDAR00102 - CARMA2 Development Work
Ice Nine Ltd · 2026-03-02
£85K
eDAR01120 - Alpha Depth Profiling - Feasibility Study
Createc. · 2026-03-02
£27K
DNWP0046/LOT1B/ Alpha SAS ECI (Phase A)
AtkinsAltrad · 2026-02-10
£491K
DNWP005.047/LOT2/Asset Care Integrated Task Team
The Decommissioning Alliance II · 2026-01-08
£6.0M
DNWP0002/LOT1B/ WAGR Strip Out FY 25/26
AtkinsAltrad · 2025-12-18
£3.0M
700 HPi_ProBook 440 Laptops - BAU-CDE Programme
CCS Media Limited · 2025-08-14
£470K
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Pipeline
Contracts expiring in the next 12 months
When these contracts end, Sellafield typically re-tenders. SMEs preparing bids 3-6 months ahead win disproportionately often.
DNWP0050/LOT1B/Permanent electrical and water supplies to Compound 4
Expires: 2026-09-24
£751K
DNWP0004/LOT1B/ Alpha Active Demonstrator
Expires: 2027-03-31
£1.4M
DNWP0021/LOT1B/ RROBO Future deployment
Expires: 2027-03-31
£909K
DNWP0023/LOT4/Waste OU - RCT Redundant Facilities Baseline
Expires: 2027-03-31
£221K
DNWP0056/LOT1A/ Quaternary Borehole Restoration
Expires: 2027-06-30
£81K
Market analysis
Bidding into Sellafield — what to expect
Supplier concentration and timing patterns that shape SME bid strategy.
95%
Top-5 supplier share
—
Avg response window
—
Median response window
14mo
Avg contract duration
Frequently asked
Common questions about selling to Sellafield
How much does Sellafield spend on procurement?
Sellafield awarded 23 contracts totalling £23.5M between 2023-08-01 and 2026-08-01, working with 13 unique suppliers. Average contract value is £1.0M.
Who are Sellafield's top suppliers?
The largest suppliers to Sellafield by total award value are AtkinsAltrad, The Decommissioning Alliance II, THOMAS GRAHAM & SONS LTD. The top five suppliers together hold 95% of contract value.
What does Sellafield buy from suppliers?
Sellafield's procurement is concentrated in consultative engineering and construction services, alloys, construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork, alongside specialist categories. See the full CPV breakdown below.
How can my business bid for Sellafield contracts?
Sellafield publishes open tenders on Find a Tender and Contracts Finder. ENKII matches your business against live tenders, identifies certifications you'll need, and surfaces frameworks worth applying to. Free Readiness Score in 3 minutes.
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Related ENKII resources
GUIDE
PQQ & Selection Questionnaire — Procurement Act 2023
How UK central-government departments evaluate suppliers at the pre-qualification stage.
GUIDE
Cyber Essentials — for government contracts
Most central-government contracts handling personal data require this certification.
SECTOR
UK Government IT Services
G-Cloud, DOS, Crown Commercial frameworks. Software + consultancy is Sellafield's largest spend area.
INDEX
All UK public-sector buyers
Browse procurement profiles for every UK government department and major buyer.
Sources & methodology
How this profile is compiled
Analysed by ENKII · Updated 2026-08-01
This profile aggregates public-record procurement data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and aggregates source records; we don't edit the underlying facts.
Source portals
- · Find a Tender (find-tender.service.gov.uk)
- · Contracts Finder
- · Spend Network
Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.